How to handle eviction process? Give breaks or no?

[Joshua D.]

I live in pa so this is a bad month for us with late payment. I usually txt the tenant saying property management said your late and whats your plans on the 2nd. How to handle? Or do you just put a notice to pay or quit on the 4th 5th or 10th and give couple days and not say anything and just slap notice to quit on door. Whats the best way to handle this? We email to but u know not everyone checks emails. We have 20 units and wanna grow to 100 most sfh’s. Also in are lease we dont have to file a notice to quit. Any help would be greatly appreciated on how to handle this?